Involving sech^{-1}(z-1/z+1)

Involving sech^{-1}(z-1/z+1) and cot^{-1}((-z)^{1/2})

Involving sech^{-1}(z-1/z+1) and cot^{-1}(1/(-z)^{1/2})

Involving sech^{-1}(z-1/z+1) and cot^{-1}((-1/z)^{1/2})